This is the biggest tweak I have made to made system to date. They are also beautifully made and hand polished. For $65 per set of three standard roller blocks, they are a real bargain. Here are pics before I get to how they sound:

I ordered one set of three for my Dac shown here:

I also ordered 2 sets of four for my speakers with threaded holes on the top of the upper cups to thread into my speakers:

Here they with the threaded insert installed:

Upper cup threaded into the Zu SuperFly:

Installation complete:

Under the Anedio D2 Dac:

Another view:

Ok, they look good, how do they sound: Wow. When I said this is the single biggest tweak so far, I mean it. It is on par with the difference the Audiophilleo with PurePower made to my system. They are extremely neutral and not tone controls. There is a very noticeable increase of transparency and resolution, both high and low level detail. I also noted a more focused and cohesive sound stage, but more importantly for me, a much more fluid, organic and relaxed sound. No trace of the 'digital' harshness or edge that I cannot stand.

Interestedly, the improvement is very similar to the benefits of low jitter with the addition of the Audiophilleo and battery PurePower. That change was especially obvious for me with high resolution recordings. It made them sound glorious, so natural, organic, fluid and relaxed. I found compelled to listen to music louder then my CD quality music. Zero irritation for long listening periods. The Ingress Audio's Isolation Bearings has now brought my regular CD quality recordings up to almost the same level as my high rez music. I can no longer hear such a large difference between the two.

I am so impressed with these babies. The best $65 tweak, I have tried. It very cool is touch the speakers or dac and see them rock back and forth effortlessly. They feel like they hovering in mid air.

Mike is a pleasure to deal with and he gladly made custom threaded ones for my speakers for a small machining cost.

I have not tried them under the Torri yet, but somehow I think Herbies Iso-Cups just can't be beat for open chassis tube amplifiers. One day I will try them out. I think though, I will order another custom threaded set for my heavy Balanced Power Transformer. I never felt the standard spikes did much.

Thanks for the pics and the info. I ordered two sets of three shortly after you did, and plan to put them under my speakers first to check them out. I have a sort of primitive roller set up under them now (Herbie's acrylic balls in automotive freeze plugs) and they have given me a similar sonic benefit that you describe. Mine have been in the mail long enough that I expect them any day.

Thats awesome Lon, I think you will really like them. Not sure how he makes money on these. I think they excel for digital components and speakers. Even though they are similar to Symposium RollerBlocks, Mike has put his own time and research into getting these just right.

The tried different spikes on my speakers and they all sounded harsher. I tried magnetic levitating feet and they sounded dead and dull. These do not seem alter the tone of the speakers, just increase the speakers resolution.

The threaded option for speakers makes it much easier to tweak speaker placement if you are by yourself.

Let me know if you try them on the Torii as I won't have any more time to play until the holidays. Have to go work to pay for all this stuff

I agree that cones don't cut it, and I had Herbie's Gliders under the speakers for a while but wasn't really convinced they improved the sound, they did make them sound different. As I said, my rudimentary roller block attempts (inspired by the system engineer Barry Diament uses) do make a similar difference, not altering the tonal balance but smoothening and deepening the sound. I'll post my impressions.

Probably won't try them under the Torii or elsewhere if they make a noticeable difference under the speakers, I'm very happy with the Iso-Cups there. Probably in time will order a few more pairs to try under CSP2+ and ZP3 if I like what these do.

Yesterday I removed my homemade roller bearing setup just to see what an impact it makes on the sound. Put them back in really quickly! They really do make a difference, and I'm eager to hear what the Ingress Audio roller blocks do under the same speakers (HR-1).

On a related isolation note I changed the interconnects I was using from ZP3 to CSP2+ from MAC Silver Quad + to my trusty old pair of TARA Labs RSC Reference. (Which was a very pleasing move). These form an arch between the two components because they are so stiff and rigid, and they sag apart a bit in the center of the arch. Just for grins I stuck a little isolation puck that I have from a Cambridge Audio DAC "Magic One" component I used to use in the gap between the two cables at the center of the arch. I noticed a subtle change, a tightening of the sound and a bit of bass warmth, welcome change. I wasn't sure I wasn't imagining it, but when my pal Dave was over last night I started with the puck out and when he went into the kitchen for a minute I slipped it in. About ten minutes later he said "What did you do?" Well, he knows me, I like to do this sort of stuff from time to time, but he heard a bit of a change to the sound (we were listening to the Porcupine Tree "Anestethize" Blu-ray which is quite a hi-res sound). So. . . maybe this is something imagined. . . but it's a folie a deux.

Rockn, it is one inch. With the tapered slots, floor gap is not a issue as long as you have a minimum of 1/4".

From 6 moons:

The Grieve loading always relied on a precise floor gap to function properly. The Essence circumvented possible user error by fixing the gap with its lacquered twin plinth. For the Soul, that detail was too complex. "The Soul instead has asymmetric slots on the bottom. The only requirement is that the cabinet sit at least 1/4 inch off the floor. We recommend and show long spikes since the Soul simply looks cooler when floating above the floor."

The Zu's have a very high efficiency of 101dB so you will hear a bit of hum, but even so, I have to be literally right at the speaker to be able to hear it. There is a slight transformer hum at Torri itself.

I have had two bad tubes that caused audible hum, hissing from the speakers but it was easy to pin point as it was only one channel, so I could swap tubes from one side to the other until I found the culprit.

What is your audio path? Try starting over with just the amp connected to the speakers and then start adding components one at a time. Also, plug everything in the same circuit if you can.

I posted earlier that when i power up the idecco, thats when the hum comes into play. It is audible when I'm right on top of it. Not that big a deal. I'll try some things as the days go by. Amp is breaking in nicely, had a good listening session Sat night, before i knew it it was 3:00am! Thanks guys.

Most of the time i have the tube in the idecco powered off as this sounds better at times. Would it still be audible powered off? Something i could look into and maybe upgrade the tube while I'm at it.

OC, not sure i follow you, what are adapter thread adapters? Should i just go with 3/8 instead of 1/4 thread? I did mention you & the superflys and Mike said 1/4 thread. I think i better call him back.

Received mine today. Very well made product. Sound is similar to the homemade roller situation I was using, if a bit brighter. Very open mid-range and sweet top end, where my setup differs is that there is a bit more of a lower midrange bloom that I am used to and dare say right now prefer. I need to play around with placement though.

My homemade solution cost me a total of 24 dollars, this cost 138 altogether. The problem with my homemade solution is that if you bump the speaker a bit it's all over, you have to do the set up again, a few minutes of not so much fun. As my best male friend and frequent listening and viewing partner struggles with cerebral palsy and needs a wide berth to get around due to the way my place is set up about one in twenty times he passes by they get bumped off their setup. I don't believe this will be the case with the Ingress items. Which will be nice, he'll be less embarrassed (though he shouldn't be) and I'll spend less time messing with the roller blocks.

Not sure I would use these under components, but I think they'll be nice under the speakers once I get them situated. Thanks for the tip.

Nice report Lon. Very interesting, as my low range tends to lean toward being a bit to heavy and even a tad muddy at times. The isolation bearings have proven to be excellent in this regard. They really tightened up the bass in my room.

Well, I have an opposite problem, quite a lively room and bass has always been the thing i seek rather than temper. That said, these blocks have seated themselves in the carpet a bit more and I'm getting a little more of what I need. I think when I can I'll order another set and try that under my PS Audio Perfectwave Transport. I have to stack that on top of my Perfectwave DAC Mark II and I did have both of them on Herbie's Audio Lab Iso-Cups (with deep moss balls and the high-end bases) but recently found that the Transport sitting directly on top of the DAC with the feet removed it sounds almost identical, so I removed the Iso-Cups between them (they actually are made to be stacked this way if desired, there are five felt circles, one at each corner and one in the center, and there are little lips that fit over the wooden tops of each unit and secure the two together nicely). Between these two units would be a nice place to try these Roller blocks.

Thanks Donnie. You're right, they're not cheap. I notice that Mike was at an audio show and was featuring ceramic balls as well, which makes sense as some claim some of these are harder still.

Right now very happy with the standard balls. It's not low bass impact I seek as much as it's a bit of mid and low bass emphasis perhaps. . . . But with a new speaker location the sound is pretty much tonally where i want it now. My homemade set up provided a bit more of this emphasis which didn't dull dynamics but did cloud detail just a smidgeon, which can be a good thing with most of the recordings I spin, but it's a fine line a lot of the time. Quite happy with these roller blocks, and the set up won't fall apart if bumped as my other set up does.

Couldn`t resist this from a happy customer from Donnies thread :)We all know how difficult it is finding quality tungsten carbide balls. You go to your local tungsten carbide ball store and pick one up off the shelf, only to get home and find that your tungsten carbide ball isn't round enough, or it's not shiny enough, or it's not tungsteny enough. And there would be wailing and the gnashing of teeth, "Why? Why, Lord, can't someone produce a decent tungsten carbide ball?" I can now report that the Almighty has heard your prayers, and behold, the Small Parts tungsten carbide ball, grade 25. If you put a Small Parts tungsten carbide ball on an inclined plane, believe me, it will roll down said plane. Those bargain brand tungsten carbide balls: who knows what they'll do? These little guys are stiffer than steel, denser than titanium, and make excellent Christmas stocking stuffers. Tungsten carbide rules!

From Symposium:Similarly, listening tests in different systems with various components confirmed that Tungsten Carbide was the best ball bearing material. While many might assume that this is due to Tungsten Carbide's extreme hardness, Tungsten Carbide's excellent mechanical transmission qualities, which are close to aluminum, make it a better "match" to aluminum alloy and thus a better choice than ceramic balls (which have slightly greater hardness but inferior transmission characteristics) for preserving mechanical transmissivity through the entire Rollerblock structure, a primary design consideration.